I have ran 50k and 50mile ultras in these. I train in these shoes. I run long distance, short distance, road, whatever where ever these shoes are great. I own multiple pairs. I do get blisters but that's what happens when running quit crying about it these shoes are awesome regardless. Any shoe you wear running will probably cause blisters. IT HAPPENS. If you run a lot this shoe fits the bill. It has a large toe box and it fits well snug to my ankle when I tighten up. If you have weird feet have these shoes fitted. If you are not sure and if you have to think twice about these shoes then go with something else.